Calex ExTemp Series Manuel de l'opérateur - Page 2

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INTRODUCTION

ExTemp intrinsically safe non-contact infrared temperature sensors measure the temperature

of an area of the surface of a solid or liquid, and transmit this as a two-wire, linear 4-20 mA

output.

Temperature ranges from -20°C to 1000°C are available. All models have an adjustable

emissivity setting, and may be used to measure a wide variety of target materials, including

food, paper, textiles, plastics, leather, tobacco, pharmaceuticals, chemicals, rubber, coal,

asphalt and paint.

A choice of precision optics is available to measure small or large targets at short or long

distances.

The optional LCT Loop Configuration Tool (USB adapter) and free software allow the

ExTemp to be connected to a PC for temperature indication, sensor configuration and data

acquisition.

These sensors are designed primarily for use in hazardous areas in conjunction with a

suitable safety barrier or isolator. All models have been certified Intrinsically Safe for use

in gas and dust hazardous areas by Certification Management Ltd. They comply with the

European ATEX Directive 2014/14/EU and are covered by certificates for IECEx (international)

and TIIS (Japan).

IMPORTANT INFORMATION FOR USE:

Voltage MUST be supplied by a suitably rated safety barrier or isolator.

For re-configuration of the sensor, the LCT MUST be connected in the safe area, behind the

protection of a safety barrier or isolator.

The ExTemp dust certification relies upon the ingress protection provided by the device

enclosure and therefore the device MUST NOT be opened. Care should be taken to avoid

inadvertently loosening the cable gland when tightening locknuts.

Do not attempt to repair a faulty unit. Contact the vendor to arrange a return.

CONFORMANCE TO REQUIREMENTS

This product has passed a high voltage withstand test up to 700 VDC.

This product utilises the reduced creepage and clearance distances of ANNEX F by meeting

the requirements of IP65 and an Overvoltage Category I.

SAFETY PARAMETERS:

The device must not be used outside of the ambient temperature range (Ta) or subjected to

voltages, current or power greater than those listed below, in order to ensure safe operation

of the device:

28 V

93 mA

650 mW

INTRINSIC SAFETY CERTIFICATION

All models of the ExTemp have been issued an ATEX (CML 14ATEX2079) Certificate for use in

both gas and dust explosive atmospheres in above ground installations.

Given the ExTemp conforms to the highest level of protection 'ia', it is suitable for use in all

Zones. The maximum energy stored in the device and the maximum surface temperature in

both normal operation, and under fault conditions, also make the ExTemp suitable for use

within all Gas and Dust Groups with a temperature rating of T4 or lower.

Tables 1, 2 and 3 describe the ATEX Gas and Dust Groups, Gas and Dust Zones, and gas

ignition temperature classifications in which the ExTemp is suitable:

Ta =

-20°C to +70°C

8 nF

0 mH